TB9400/TN9275 Installation and Operation 149
© Tait International Limited May 2023
CWID
Continuous Wave Identification is a method of automatically identifying
the base station using a Morse code. Continuous wave means transmission
of a signal with a single frequency that is either on or off, as opposed to a
modulated carrier.
dispatcher A person who gives official instructions by radio to one or more SU users.
downlink The transmission path from fixed equipment to SUs.
duplex Providing transmission and reception in both directions simultaneously.
duty cycle Used in relation to the PA, it is the proportion of time (expressed as a
percentage) during which the PA is transmitting.
EIA Electronic Industries Alliance. Accredited by the American National
Standards Institute (ANSI) and responsible for developing
telecommunications and electronics standards in the USA.
EMC Electromagnetic Compatibility. The ability of equipment to operate in its
electromagnetic environment without creating interference with other
devices.
ETSI European Telecommunications Standards Institute. The non-profit
organization responsible for producing European telecommunications
standards.
FCC Federal Communications Commission. The FCC is an independent United
States government agency that regulates interstate and international radio
communications.
feature licence key The unique set of digits belonging to a licence which is programmed into
the base station to enable a feature set.
flash Electrically block-erasable and programmable read-only memory.
FM Frequency Modulation. Often used as an adjective to denote analog radio
transmission.
frequency band The range of frequencies that the equipment is capable of operating on.
front panel The cover over the front of the base station containing the indicator LEDs,
four-line LCD display, user controls and cooling fans.
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